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Head mounted eye tracker detection method

A detection method, eye tracker technology, applied in instruments, character and pattern recognition, computer parts and other directions, can solve problems such as eye reduction or even disappearance

Inactive Publication Date: 2014-08-20
AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
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AI Technical Summary

Problems solved by technology

[0002] Traditional eye detection and tracking methods mainly use the difference between the appearance and shape of the eyes and other parts of the human face. The characteristics of the eyes, such as black pupils, white sclera, round irises, eye corners, eye shapes, etc., can be used to distinguish human eyes from other objects, but due to eye closure, blinking, variability in eye size and position, different lighting conditions, orientation of the face, etc., these eye features will be reduced or even disappear

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Embodiment Construction

[0052] The embodiments of the present invention are described in detail below. This embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following implementation example.

[0053] The identification process of this embodiment is as follows figure 1 As shown, it specifically includes the following steps:

[0054] (1) Extraction of the center of the corneal emission spot

[0055] When the infrared point light source irradiates the human eye, a bright spot will be formed on the surface of the cornea, so there is a white area in the image captured by the eye camera, which is the corneal reflection. The position in the image remains constant, so within the image plane, the center of the corneal reflection is usually taken as a reference point. Depend on figure 2It can be seen that sin...

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Abstract

The invention discloses a head mounted eye tracker detection method, which comprises the steps of extracting the cornea emitting facula center; extracting the feature points of the pupil outline and fitting the pupil outline. The head mounted eye tracker detection method has the advantages that the position of the eye fixation point is worked out according to the anti-interference performance of an infrared light source, then, the positions of eyes during eye closing and eye twinkling are fit according to a tracking algorithm, the eye movement fixation orientation can be precisely measured, the precision of an identification algorithm is high, and the measurement on the eye movement fixation orientation at a high-precision requirement can be met.

Description

technical field [0001] The invention relates to a method for eye detection and tracking, in particular to a method for detection of a head-mounted eye tracker. Background technique [0002] Traditional eye detection and tracking methods mainly use the difference between the appearance and shape of the eyes and other parts of the human face. The characteristics of the eyes, such as black pupils, white sclera, round irises, eye corners, eye shapes, etc., can be used to distinguish human eyes from other objects, but due to eye closure, blinking, variability in eye size and position, different lighting conditions, orientation of faces, etc., these eye features will be reduced or even disappear. Contents of the invention [0003] The purpose of the present invention is to overcome the deficiencies of the prior art, and provide a head-mounted eye tracker detection method, which utilizes the reflection phenomenon of the pupil to near-infrared light to locate the pupil. [0004] ...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06K9/46
Inventor 刘祺杨新军时圣柱徐淑波
Owner AVIC HUADONG OPTOELECTRONICS (SHANGHAI) CO LTD
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